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CA1098003A Expired / Lapsed CA ⏱️ 0.0 years remaining

Body tissue penetrating method and apparatus

Assignee: National Research Council Canada
•
Filing: 1977-09-12
•
Granted: 1981-03-24
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Expires: 1997-09-12
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Abstract

Abstract TITLE BODY TISSUE PENETRATING METHOD AND APPARATUS INVENTORS CESAR A. ROMERO-SIERRA ZENON JENNINGS JOSEPH WARWICK ABSTRACT OF THE DISCLOSURE A method and apparatus for making passageways through body tissue to provide access for a surgical operation beneath the tissue and comprises inserting a vibrating tissue penetrating probe into the tissue, inserting a tubular tissue separating member into the passageway and manipulating the member to separate tissue fibers and enlarge the passageway, and if required successively inserting separating members of increasing cross-section to further enlarge the passageway. A frustoconical tubular member may be used for further enlargement and retained in the passageway as a shield to provide an unobstructed passageway for a surgical operation. The invention alleviates bleeding and other deleterious post-operative effects of incisions. .

Inventors

  • 👤 Cesar A. Romero-Sierra
  • 👤 Zenon Jennings
  • 👤 Joseph Warwick

Bibliographic Details

Application Number —
Jurisdiction CA
Data Source google_patents
Last Synchronized 2026-10-23 11:09
CPC Classifications
A; A61; A61B; A61B17/00; A61B17/34; A61B17/3417; A61B17/02; A61B17/04; A61B17/06; A61B17/06066; A61B2017/06085

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 65 words
An apparatus for making a passageway in body tissue comprising: (a) a tissue penetrating probe comprising an elongated member having a blunt end; (b) a vibrating device for detachably connecting to the other end of the probe; and (c) a tubular tissue separating member for slidably positioning over said penetrating probe and for introducing into the tissue to enlarge the passageway formed by the probe.
Claim 2
Independent Claim 65 words
An apparatus for making a passageway in body tissue comprising: (a) a tissue penetrating probe comprising an elongated member having a blunt end; (b) a vibrating device for detachably connecting to the other end of the probe; and (c) a tubular tissue separating member for slidably positioning over said penetrating probe and for introducing into the tissue to enlarge the passageway formed by the probe.
Claim 3
Dependent Claim 23 words
The apparatus of claim 1 further comprising at least one additional tubular separating member having a larger cross-section for further enlarging said passageway.
Claim 4
Dependent Claim 27 words
The apparatus of claim 1 further comprising a frustoconical tubular member for insertion into the passageway to facilitate access to the underlying region for a surgical operation.
Claim 5
Dependent Claim 16 words
The apparatus of claim 1 further comprising a gripping device adjustably attached to the separating member.
Claim 6
Dependent Claim 17 words
The apparatus of claim 1 wherein the blunt end of the probe has a blunt lanceolated shape.

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